Improvement in loom shuttle-box mechanism



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No, 121,838i Patented Dec. 12,1871.

WL' messes" l Ivm/envan UNITED STATES PATENT GEEICE.

" "Nm-JOHN ASHWORTH, OF NORTH ANDOVER, MASSACHUSETTS, ASSIGNOR TO GEORGE L. DAVIS, JOHN A. WILEY, JOSEPH M. STONE, GEORGE G. DAVIS, JOSEPH H. STONE, AND JAMES H. DAVIS, OF SAME PLACE.

IMPROVEMENT IN LOOM SHUTTLE-BOX MECHANISM.

Specification forming part of Letters Patent No. 121,838, dated December 12, 1871.

To all 'whom it may concern:

Be it known that I, JOHN AsHwoRTH, of North Andover, in the county of Essex and State of Massachusetts, have invented certain Improvements in Looms, of which the following is a speciiication: v

My invention relates to the construction of the mechanism by which the shuttle-boxes are changed in looms where several shuttles are employed, as is the case in what is called fancy or iigure weaving, by which the shuttle-boxes are accurately shifted with an easy motion and also prevented from being thrown too far by the momentum of the moving parts. This consists in the employment of two or more eccentrics, one revolving upon the other and having different eccentricities, so'that by their combined and separate motions an extent of motion may be given to the lever or other device that works the series of shuttle-boxes sufficient to move the boxes the number of grades or spaces required by the order of using the shuttles in weaving; and it also consists in the manner of constructing and arranging the devices employed to ilnpart the motions to the eccentrics at the proper times under the control of apattern-chain; and also in connecting the mechanism that operates the chains upon the opposite sides of the loom, so that they may be moved and kept iu proper relation to each other'.

In the drawing, Figure l is a plan of the mechanism. Fig. 2 is a side elevation Fig. 3 is a vertical sectional elevation. Fig. 4 is an end elevation, and Fig. 5 is a separate view of the eccentric shaft and its attachments.

In the drawing a separate series of eight shuttlc-boxes is shown upon each side of the loom with a separate arrangement of mechanism for operating each, connected only by the shaft which works two pattern-chains, which may also be made entirely disconnected if desired. A description therefore of the devices upon one side of the loom will serve for both, excepting the cross-shaft that works the pattern-chains.

A is the frame of the loom; B, the lay-shaft; C, the lay; and C the two series of shuttle-boxes, each made to receive eight shuttles, and sliding up and down in suitable guides by means of the levers D and links D1 attached to the lower ends of the shuttle-box standards (l2 in a manner well known. To the opposite arm of the lever D is attached the eccentric-rod E, which embraces the outermost one of the series of eccentrics F1 F2 F3, seen more clearly in Figs. 3 and 5. These eccentrics are mounted upon the shaft F, as shown, and the inner and smallest eccentric F1 is formed upon it, and its eccentricity is sufficient to move the boxes one grade, or from one box to the next one to it. The shaft F and eccentric Fl is revolved by the index-plate G, which is fixed upon the shaft. The next eccentric, F2, is fitted to and revolves upon the periphery of F1 and has an eccentricity sufticient to move the lever D a distance that will move the boxes two grades, and it has also a radial slot, a, which coincides with the radius of eccentricity, in which a stud, b, works, which is iixed in the index-plate G1, which runs loosely on the shaft F, as seen in Figs. 3 and 5, and by means of which this eccentric is revolved. The outer eccentric F3 is iitted to and revolves upon the periphery F2 and has an eccentricity sufticient to move the lever l) a distance that will move the boxes four grades, and it also has a radial slot, c, in which the stud d works, which is xed in the index-plate G2, which also revolves loosely upon the shaft F and turns the eccentric. Each of the index-plates G Gl G'2 has two notches, e, in the periphery upon opposite sides corresponding to the dead-points of the eccentries, and also has upon its hub a pinion, y, by which it is revolved by engaging with one of the gears H H1 H'Z upon the shaft l1. as shown. The number ot' teeth in the gears H are divisible by 8, and are so proportioned to the number of teeth in the pinions g that when the gears H are turned oneeighth of a revolution the index-plate and eccentric will be turned one-half of a revolution, or from one dead-point of the eccentric to the other. The gears H ,&c., are turned one-eighth of a revelution at a time by means of the toothed sector I., which vibrates upon the shaft L and is provided with a pawl, J, which engages with the teeth of the gear H, as is seen in Fig. 2. Upon the side of each of the gears H is a disk or rim, i, of about the same exterior diameter as the extremities of the teeth of the gear, and at eight equidistant points in its periphery notches are cut which correspond to the spaces between the teeth of the gear. By this means the pawl J is prevented t'roin viigalgin;t with thv tvvth of thv gear vXvvpt at thvsv notvhvs, so that thv nit-vhanisin avts as a ratvhvt with vight tvvth. 'l`hv Sevtorslarvrvspvvti\`vlyosvillatvd b thv toothvd sectors K, whivh vneaev with thvni` and thvsv are oseillatvd by thv hoolvrods ll. thv torwai-d endsot" whivh arv providvtl with hoolts or vatvhvs I, which en ;'atv with thv vibrating drivvr .\l. when they arv rais-vd hy thv pattvrn'vlmin l. as is shown. Thv drivvr ,ll is vihratvd hy thv vani N upon the vain-shalt Nl. whivh laakt-s onv rvvolution to two ol' thv layvshat. 'lhv drivvr is made ill thv l'orin olI a pvndulous lvvvr having its fulvrntn at M1. and is in two parts. m and n, which arvjointvd togvthvrat mi. as shown. 'l`hv upper vnd ot' thv part m is hvld hy thv yivlding Catvh o, whivh swings on a t'nlvruin in thv part u, as shown. and is hvld against thv part :n in an inclinvd position h v thv spring Q. whivh is attached to all arni or stud upon thv vatvh at thv oppositv sitlv otA thv part n and svrvvs to hohl the vatvh against thv part m with sutiivivnt t'orvv to withstand thv ordinary strain upon thv drivvr in working; thv niavhinvry. and it also svrvvs to rvtravt thv drivvr. holding;r thv ivvvr against thv cani X; hut, in vasv any unduv rvsistanvv isopposed to thv niovvinvnt ot' thv drivvr. thv vatvh o. by rvason ot' its invlinvd position. yivltls and allows thv vain N toinaitv its rvvolution without breakingv thv tnavhinvry. 'l`hv havh vndsot' thv hook-rods lI v.\tvnd soniv distanvv t'roin thvir points ot' vonnvvtion with thv svvtors l\' and arv connvvtvd hy invans ot' thv vvrtival rods lt with thv horizontal lvvvl's S. whivh. at thvir oppositv ends, arv. b v thv rods 'l`, vonnvvtvd with thv lvA vvrs U, whivh worlt upon thv pattvrn-vhain l in the usual niannvr. yl`hv rods ll arvvonnvvtvd with thv hook-rods L hy a sliding;l ljoint and spring;7 r, so as to torni a .vivlding vonnvvtion to votnpvnsatv t'ol thv vurvvd inotions ol' thv svvtor K and thv drivvr M. 'l`hv lvvvrs S arv vavh proY vided with a pin ordvtvnt. s. whivh vile-'acts with the notvhvs v in thv pvriphvry ol vavh intlvx-platv to hold thvnl at rvst w ith thv vvvvntrivs at thvir deadpoints. \\hvn thv lvvvrs arv not raisvd hy thv pattvrnvhain. 'l`hv pattvrn vhain mayl hv lnadv in any ol'thv usual tortas with vorrvspond ing dvtails ot' vonstrnvtion: hut thv onv shown is that whvrv thv lvvvrs l' arv opvravd hy largv and slnall rollvrsor halls arrang'vd in an vndlvss chain` whivh inovvs thv lvvvrs by thv iutvrinittent rotation ol' the sprovltvt-whvvl that slipY ports the vhain in a wvll known inannvr. 'l'hv sprocltvt-whvvls upon vavh sidv oll thv loont, arv connvvtvd h v thv vross'shat't \\'.so that hoth lnlttvrnvhains may hv worltvd t'roin onv ratvhvt, and also niay hv hvpt togvthvr in thvir propvrl relations to vavh othvr in vasv it is nvvvssary` to turn thv vhain backward or t'orward by hand, i as in vasv otl a inispivh or thv l'ailnrv ot' thv wvt't.

ln this voinhined arranggeinei1tot` several eevvntrivs to worlt a svrivs ot' shuttle-boxes it may hv svvn that whvn all the eccentrics are worked tog'vthvr with the eccentricities ot" all of them upon thv saniv side o" the center they give to thv lvvvr l) a movement sutiicivnt, to carry the hoxvs t'roni onv vxtrvnte to the other; or, il' one or two vvvvntrivs only are rotated in connect-ion, it will varry thv boxes a distant-,v corresponding to thv sinn ot' thvir eccentricities; or, it' rotated, so that thvir vvventricities will actk opposite t0 vavh othvr. it will carry the boxes a distance corrvspondingy to thv difference ot' their eceentricitivs, so that by means ot' the stun or difference ot' thv joint action of the eccentries any box of thv svrivs may he brought to the race t'roni any position at any piek; and so ot' othvr numbers ol' sliilttlolittxts in the serivs; a svrivs of t'olu' hoxvs, t'or instance, would require only two ec-TJ vvntrivs. nainvly, one throwing one grade andthe othvr throwing two grades.

'lhvsv vxainplvs will show the manner of construt-tin.;r and combining the eccentrics to adapt thvni to any nuinher ot' boxes in the svrivs.

lt is ohvious that inany forins ot' devices niay hv nsvd to turn the eccentrios intermittently instvad ot' thosv shown, and I have already tlc- \isvd svvvru] t'or that purpose7 soniv oi` which are siinplvr and bvttvr adapted to he used when a` lvss nuiuhvr ot' vceentrics are used; but l have vinployvdthvnivvhanislnhereindvsvribvdtoshow f th applivation ol' tny invention to a large initiihvr ot' hoxvs. And so also as regards the yield-y ing' dvvivvs involnhination `with thv drivvr l'or prvvvntine; thv hrvaltiugot tlteniachinvry, as betorv dvsvrihvd. othvr equivalent devices inay obviously hv vtnployvd which will accomplish the salnv pnrposv; but that herein shown is siniple and vt'livivnt.

\\'hat l vlaini as luy invention isl. 'lhv vonihination and arrangvnivnt of twoor inorv vvvvntrivs, substantially as dvsvrihvthtoopvratv a svrivs ot' shuttle-boxes.

L'. ln voinhination with twoor niore vccvntries and thv svrivs o1' shuttle-boxes. eonstruvtvd suhstantiallyl astlvsvrihvd, thcdvvicvs sho\\'n,ortheir vquivalvuts. hy whivh a joint or svparatv avtion niay hv givvn to vithvr eccentric under thv control ot' thv luittvrn-vhatin.

'l`hv iuvlinvd yielding' catch in combination with thv two parts m and u ot' the driver M, vonstruvtvd and operating` substantially as desvrihvd.

llxvvntvd February 14th, 1871.

JOHN ASIlWOR'll-l.

\\'itnvsses:

Wn. C. HIBBARD,

A\'. t. LoitnAnD. (95) 

